Geochemistry at DSDP Holes 80-550 amd 80-548

At Sites 548 and 550 of DSDP Leg 80 several condensed sedimentary sections contain various types of polymetallic crusts. The relationships between mineralogic and geochemical data in the sections have been studied in the context of the biostratigraphic and sedimentologic results. The diagenetic evolution during periods of low accumulation rate varies according to depth and sedimentary environment. At Site 548 on the continental margin, the phosphatic and manganiferous crusts are similar to those related to upwelling influences before Late Cretaceous deposition. At Site 550 the upper Paleocene cherts, deposited directly on oceanic crust, are overlain by pelagic brown clays containing diagenetic manganiferous concretions characterized by very high Sr and Ba contents. The origin of these small nodules is probably related to the authigenesis of fecal pellets. The upper Eocene indurated section is made up of authigenic zeolites, clays, and Fe-Mn phases and is similar to the volcanic-sedimentary deposits described in deep basins and seamounts of the Pacific. These crusts and a polynucleated nodule within the overlying sediments have geochemical characteristics (high Ni, Co, and Cu contents) similar to those formed in the deep ocean under volcanic influences during periods of low sedimentation rates or sedimentary hiatuses. Volcaniclastic material is ubiquitous and peculiarly abundant in Eocene sections and can be related to the volcanic formation of Iceland in the North Atlantic.

Minerals of bulk samples and clay fraction at DSDP Leg 80 Holes

At the request of the Leg 80 scientific party, selected samples of Cretaceous age were processed by X-ray diffraction at the mineralogy laboratories at the Ecole des Mines (Albian to Late Cretaceous samples) and at the Institut de Géologie at Dijon (Barremian samples). The results were used in developing the lithostratigraphy and sedimentology discussed in this volume by Rat et al. 1985 (doi:10.2973/dsdp.proc.80.140.1985) in their study of Barremian-Albian paleoenvironment, by Graciansky and Gillot in their study of Albian and Cenomanian limestones, and by Graciansky and Bourbon in their paleoenvironmental reconstructions for the Late Cretaceous chalks.

Process of Expropriation of Buildings for the Construction of the New Dock of the Port of Cartagena (Spain) in the 18th Century

The need of the Bourbon monarchy to build a Naval Base in the Bay of Cartagena (Spain) during the eighteenth century, implied performing various actions on the environment which allowed the construction of the new dock. One of the priority actions was the transformation of the watershed of the streams that flowed into Mandaraches´s sea. For this reason, a dike was designed and constructed in the northern part of the city. The design of this great work, which was designed as a fortification of the city, was subject to considerable uncertainties. Its proximity to the city involved the demolition of several buildings in the San Roque´s neighborhood. The greater or lesser number of affected buildings and the value of the just indemnification for the expropriation of them, become decisive factors to determine if the work was viable for the Royal Estate or not.

[Decreto de extinção da escravidão no Brasil] [manuscrito]

Versão digitalizada do decreto que aboliu a escravatura no Brasil, dando origem à Lei Áurea. O documento é assinado pela Princesa Imperial Regente Isabel (Isabel Cristina Leopoldina Augusta Micaela Gabriela Rafaela Gonzaga de Bragança e Bourbon, 1846 - 1921), pelos senadores Primeiro Vice-Presidente Antônio Candido da Cruz Machado (1820 - 1905), Primeiro Secretário Barão de Mamanguape (Flávio Clementino da Silva Freire,1816 - 1900) e pelo Segundo Secretário do Joaquim Floriano de Godoi (1826 – 1907). O manuscrito original faz parte do acervo do Arquivo do Senado Federal.

El papel del clero en la expulsión de los jesuitas decretada por Carlos III en 1767

El presente trabajo trata sobre la reacción del clero secular y regular ante la expulsión de los jesuitas de la monarquía hispánica en 1767. Veremos las opiniones de algunos de los obispos favorables a la política regalista de Carlos III, y cómo actuaron antes la operación mejor diseñada y más eficaz contra la Compañía de Jesús en los amplios territorios del monarca Borbón. Al mismo tiempo, analizaremos los comentarios de los propios expulsos sobre el clero español y las consecuencias que tuvieron ambas reacciones.

El mito contrarrevolucionario de la «Restauración»

Durante la guerra de la independencia los sectores ultra-realistas construyeron la imagen de que el mundo anterior había sido atacado en sus bases y destruidos los elementos que lo sustentaban. Una amplia publicística fue creciendo en este contexto. Sin embargo, ante el inminente regreso del rey en 1814, vieron la oportunidad de recuperar el poder perdido y cambiaron de estrategia. El mito de la recuperación del orden perdido mediante la restauración de los Borbones va a ser el instrumento del que los realistas se valdrán para negar la magnitud de los cambios vividos durante aquellos años. El presente artículo intenta explicar la importancia que tuvo la construcción del mito de la restauración para sustentar el golpe contrarrevolucionario de mayo de 1814.